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Problem with pthreads under RedHat 6.1


I am having a problem running software that tries to use the pthread
library. When I run the binary, I receive the following error message:

./uxwdog: error in loading shared libraries: ./uxwdog: symbol
sigprocmask, version GLIBC_2.0 not defined in file with
link time reference

If I issue "ldd uxwdog", I recieve the following information: => /lib/ (0x4001a000) => /lib/ (0x4002b000) => /lib/ (0x4002e000) => /lib/ (0x4005c000) => /usr/lib/
(0x4006b000) => /lib/ (0x400ad000) => /lib/ (0x400c9000)

So it's trying to use libpthread, this would be version 0.8 under the
RedHat 6.1 installation.

If I issue "nm /lib/ |grep sigprocmask" , I see the

         U sigprocmask@@GLIBC_2.0

So basically in my version of libpthread, which I received under the
redHat 6.1 installation, sigprocmask is undefined? Can anyone tell me
how I can resolve this problem?


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